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1996 Ford F-250 crank, no start

Tiny
DEADLYSQUID
  • MEMBER
  • 1996 FORD F-250
  • V8
  • 2WD
  • AUTOMATIC
  • 117,000 MILES
On occasion, my 1996 F250 will crank but will not start. If I let it sit for about 5-20 seconds with the key in the "run" position, some type of relay "opens" (left side, under the hood) and the truck will start right up. Other times, it starts right away. No rhyme or reason when this will happen. I put in a new fuel pump relay from NAPA but the issue continues. Any thoughts?
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Wednesday, February 10th, 2010 AT 6:01 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be the computer controlled of the Fp relay or the ignition switch
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Wednesday, February 10th, 2010 AT 6:34 PM
Tiny
DEADLYSQUID
  • MEMBER
  • 2 POSTS
Sounds like you are saying the computer controls the activation of the fuel pump relay? Would "gunk" build up over the last 14 years inside the ignition switch also have the same effect? Does the ignition switch also provide input to the FP relay?
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Wednesday, February 10th, 2010 AT 8:27 PM

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